Closing shutter for tunnel ovens



Oct. 20, 1931. M. KULZlNSKl 1,328,569, 7

I CLOSING SHUTTER FOR TUNNEL OVENS I Filed Dec. 27. 1928 2 Sheets-Sheet 1 INVENT h 77?. Hugging A TTORNEYS.

Get. 20, 1931. M KULZINSKI 1,828,669

CLOSING SHUTTER FOR TUNNEL OVENS Filed Dec. 27, 19?8 2 Sheets-Sheet 2 1 INVENTOR. h f h By Jful ins/41L 9D ATTORNEYS.

a ivisrlsnav KULz INsxI,

Patented Oct. 20, 1931 UNITED, STATES PArsury o'rFlee is 1mm manates; .SsaTaaaa; AK'rsIAsEL'rs, or TA Lmn, its-Ton a. v ,1 mania am ewer Application at December 27, 192s; "seliai intg' scares.i f

This invention relates to a closing shutter for all types of tunnel ovens :drying ovens,

dry distilling ovens, roasting and similar kilns or furnacesfor the corresponding heat treating ofvarious fuels'such as charcoal, coal and lignite, all kindsof shale and bituminous materials, also for roastingdifierent kinds of clay, clay products, all kinds of ore and the like for chemical and metallurgiso that the gas and vapours evolved in one of the sections can penetrate into the adjacent one or even escape into the atmosphere or else outside air can fiow into the. oven.

Besides the serious inconveniences arising out of these obstacles they are also very often I the cause of explosions. 1 v According to the present invention the above referred to defects are removed and a proper and tight lock is achieved in the fol lowing manner.

The invention is clearly illustratedinthe accompanying drawings, inwhich'z Fig. l is a vertical longitudinal sectional view of one form of the invention,

Fig. 2 is a similar viewof another form of the invention, I V

Fig. 3 is a similar view of another modification of the invention, and k a Fig. 4 is a'crossjsectional view of the arrangement shown in Fig.3. V As shown in Figure 1 the movable part (a) V as well as the fixed part (b) of theoven are tightly joined withdiaphragm box (7) containing slide ('6) which, when pressed by the movable part (a) on to fixed part (Z2) properly bolts the inlet ofthe oven. The front manner.

surfaces (0) and (d) as well'as slide (6) are Y suitably worked and a perfectlytight lock is achieved" the movable part is into' motion by means ofanautomatic device such as for instance,-hydraulic cylinders (It), as shown onthe drawings: The return'movement'of theimovable part (a)-rreleases slide y (e) which can thus be loweredand lifted without any difilculty' and in any suita'b'le In theform'of constructionof closing shutters within the oVen itselfshown in Figure 2, the movablepart (a) is tightly andelastically joined with the fixed; parts-"(12) and,

( 5 as well as with diaphragm box-es and ('fir),xoif-which diaphragmbox (filcontains v slidete), so that thefloweringancl lifting'of slide e)=can take place in a free manner.

In the case of lock-chambers arranged 'within the oven the movable part '(a), as

shown in Figure 3, is dividedinto'twoior more sections tightly. andlelastically intercommunicated by means of one (f "ormore similar diaphragm boxes in order], to allow of a free lowering lifting of slides;( e) and'the diaphragm boxes (f) serve'for jthe 7 connection of' the said sections with the g Y fixed parts of the oven.. Figure 4i is a cross V section through the shutter.

Theconstruction of the described shutter is. thus that all the mechanisms necessary for its operating, can be placed from outside,

where thereis no danger of their being af-;

fected by high temperature vapours and gases, and all the necessary checks andrea pairs canv take place at any desired time,

which naturally ensures a reliable and last-' ing work of such a closing shutter.

Having now particularly described and as- V certained the nature of the said invention and in what manner the same-is tobe performed, I declare that what I claim "is gether with another similar slide alock- I '90 1. In aclosing shutter for tunnel ovens, i of the type wherein a slideisemployed for closing the inletof the oven or dividing the oven into separate sections or forming tof s able part of the oven by means of'vvhich the pressing of this part on to the slide and of the slide 011 to the fixed part of the oven is effected.

3. In a tunnel oven the combination, a

fixed tunnel, part, a movable tunnel part a diaphragm box: connected; with the; movable tunnel part, a slide contained in the diaphragm box, another diaphragm box tightly and elastically joining the movabletunnel part to the fixed tunnel part. 7

4. An arrangement as claimedinclaim 3, wherein the movable partincludes a plurality of parts, and a plurality. of: diaphragm J boxes forming elastic and tight intercom- I'nunic ation means between said; parts.

, 5.-In= a tnnneli'oven thecombination', a fixed part; I a movable part, a diaphragm box between said parts forming aitighti and elastic joint therebetvveen, and a: slide operable c inrsaididiaphragmbox for controlling communioation between the parts.

6; A tunnel oven as claimed in claim 5, wherein hydraulically operable cylinders are operably connected with themovable part fortightly clamping the slide between-[the stationary and movable par-ts, substantially as and for the purposes set forth.

In. testimony whereof I- afiix mv signature;

MsqusLAv KUL'ziNsKI.

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